The soldier, yet to be named, was killed during the exercise at the Mount Bundey Training Area, around 100 kilometres south-east of Darwin. The Defence Department released a statement confirming the incident but provided no further details, requesting that the privacy of Defence members and families be respected at this time.
NT Chief Minister Lia Finocchiaro said on Tuesday morning: "Our thoughts and prayers are with the family of the young man who lost his life in this tragic event. All of our service personnel will be feeling this loss immensely."
Mount Bundey is used by the Australian Army and its allies for live-fire training. In 2017, Private Jason Challis was killed during a live-fire exercise at the same area. An inquest into his death described the exercise as "shambolic," and the Department of Defence later pleaded guilty to failing to comply with a health and safety duty.
The incident comes five months after Warrant Officer Class Two Lachlan Muddle was killed during a parachute training course at Jervis Bay Airfield. Defence is expected to provide further details about the latest incident at a later time.